Pension, Other Postretirement Benefits and Savings Plans - Benefit Costs and Amounts Recognized in Other Comprehensive (Income) Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Benefits cost (credit):
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense	Interest Expense	Interest Expense
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement and Curtailment Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Defined Benefit Plan Curtailments And Settlements	Defined Benefit Plan Curtailments And Settlements	Defined Benefit Plan Curtailments And Settlements
Pension Plan [Member]
Benefits cost (credit):
Service cost	$ 37
Other Postretirement Benefits Plan [Member]
Benefits cost (credit):
Service cost	2	$ 3	$ 3
Interest cost	16	12	9
Expected return on plan assets	$ 0	$ 0	$ 0
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Amortization of prior service cost (credit)	$ (1)	$ (1)	$ (6)
Amortization of net losses	$ (9)	$ 2	$ 3
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Net periodic cost	$ 8	$ 16	$ 9
Net curtailments/settlements /termination benefits	0	0	0
Benefits cost	8	16	9
Recognized in other comprehensive (income) loss before tax and minority:
Prior service cost (credit) from plan amendments	0	0	(4)
(Decrease) increase in net actuarial losses	1	(101)	(20)
Amortization of prior service (cost) credit in net periodic cost	1	1	6
Amortization of net losses in net periodic cost	9	(2)	(3)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	0	0	0
Total recognized in other comprehensive (income) loss before tax and minority	11	(102)	(21)
Total recognized in total benefits cost and other comprehensive (income) loss before tax and minority	19	(86)	(12)
UNITED STATES | Pension Plan [Member]
Benefits cost (credit):
Service cost	8	13	9
Interest cost	195	133	94
Expected return on plan assets	$ (231)	$ (214)	$ (196)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Amortization of prior service cost (credit)	$ 0	$ 0	$ 0
Amortization of net losses	98	101	107
Net periodic cost	70	33	14
Net curtailments/settlements /termination benefits	34	124	41
Benefits cost	104	157	55
Recognized in other comprehensive (income) loss before tax and minority:
Prior service cost (credit) from plan amendments	0	6	0
(Decrease) increase in net actuarial losses	40	(99)	(45)
Amortization of prior service (cost) credit in net periodic cost	0	0	0
Amortization of net losses in net periodic cost	(98)	(101)	(107)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	(34)	(124)	(41)
Total recognized in other comprehensive (income) loss before tax and minority	(92)	(318)	(193)
Total recognized in total benefits cost and other comprehensive (income) loss before tax and minority	12	(161)	(138)
UNITED STATES | Other Postretirement Benefits Plan [Member]
Benefits cost (credit):
Benefits cost	5	12	5
Foreign Plan [Member] | Pension Plan [Member]
Benefits cost (credit):
Service cost	18	24	30
Interest cost	108	60	47
Expected return on plan assets	$ (92)	$ (67)	$ (48)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax	Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Amortization of prior service cost (credit)	$ 2	$ 2	$ 1
Amortization of net losses	16	21	33
Net periodic cost	52	40	63
Net curtailments/settlements /termination benefits	7	0	2
Benefits cost	59	40	65
Recognized in other comprehensive (income) loss before tax and minority:
Prior service cost (credit) from plan amendments	(0)	(1)	3
(Decrease) increase in net actuarial losses	120	(10)	(136)
Amortization of prior service (cost) credit in net periodic cost	(2)	(2)	(2)
Amortization of net losses in net periodic cost	(16)	(21)	(33)
Immediate recognition of prior service cost and unrecognized gains and losses due to curtailments, settlements, and divestitures	(13)	0	(2)
Total recognized in other comprehensive (income) loss before tax and minority	89	(34)	(170)
Total recognized in total benefits cost and other comprehensive (income) loss before tax and minority	148	6	(105)
Foreign Plan [Member] | Other Postretirement Benefits Plan [Member]
Benefits cost (credit):
Benefits cost	$ 3	$ 4	$ 4